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$183+ Cheap flights from Ontario (ONT) to Caribbean

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
jul. 5 — jul. 121
sáb. 7/5
sáb. 7/12
1 adult, Economy
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Cheap flight deals from Ontario to Caribbean

Keep the following information in mind while searching for Ontario to Caribbean flight deals. Data was last updated junio 30, 2025.

Round-trip from

$365
(Delta)

One-way from

$183
(Delta)

Popular in

December

Cheapest in

October

Average price

$484
From Ontario to Caribbean
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One-way flight from Ontario to Caribbean
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Highest demand for flights based on searches. 11% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Ontario to Caribbean

Cheapest flights from Ontario to Caribbean
Explore the most affordable flight options available from Ontario to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 30, 2025.

This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/277:05 amONT - SJU
1 stop12h 02mDelta
sáb. 9/612:50 pmSJU - ONT
2 stops12h 50mDelta
Deal found 6/29$365
This American Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/166:17 amONT - SJU
2 stops13h 39mAmerican Airlines
vie. 8/227:55 amSJU - ONT
1 stop16h 17mAmerican Airlines
Deal found 6/29$401
This JetBlue deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/310:56 pmONT - SJU
1 stop11h 49mJetBlue
mar. 10/712:50 pmSJU - ONT
1 stop11h 39mJetBlue
Deal found 6/30$410
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/155:05 amONT - SJU
1 stop9h 25mUnited Airlines
mié. 10/292:46 pmSJU - ONT
1 stop9h 49mUnited Airlines
Deal found 6/29$455
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/317:10 amONT - SJU
1 stop11h 25mSouthwest
dom. 11/96:10 amSJU - ONT
1 stop15h 05mSouthwest
Deal found 6/29$461
This JetBlue deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/1610:56 pmONT - STI
1 stop12h 17mJetBlue
vie. 9/2612:48 pmSTI - ONT
1 stop11h 41mJetBlue
Deal found 6/28$495
This JetBlue deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/710:56 pmONT - PUJ
1 stop10h 12mJetBlue
jue. 9/1111:30 amPUJ - ONT
1 stop12h 59mJetBlue
Deal found 6/28$505
This American Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/111:59 pmONT - PUJ
2 stops12h 31mAmerican Airlines
sáb. 11/86:25 pmPUJ - ONT
2 stops21h 08mAmerican Airlines
Deal found 6/28$509
This JetBlue deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/2811:59 pmONT - AUA
1 stop13h 01mJetBlue
lun. 8/41:20 pmAUA - ONT
1 stop11h 49mJetBlue
Deal found 6/30$517
This JetBlue deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/511:59 pmONT - NAS
1 stop11h 46mJetBlue
mar. 8/1210:07 amNAS - ONT
1 stop15h 03mJetBlue
Deal found 6/30$531
This JetBlue deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/1610:56 pmONT - SDQ
1 stop14h 59mJetBlue
vie. 9/2612:35 pmSDQ - ONT
1 stop11h 54mJetBlue
Deal found 6/29$537
This American Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/187:16 pmONT - STT
2 stops14h 32mAmerican Airlines
lun. 9/221:40 pmSTT - ONT
2 stops11h 53mAmerican Airlines
Deal found 6/30$595

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Caribbean that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 30, 2025.
Use the filters below to find and compare flights from Ontario to Caribbean that are best for you.

Fly from

Ontario

Fly to

Caribbean

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mié. 8/27

7:05 am-10:07 pm

1 stop12h 02m

San Juan Luis Munoz Marin Intl

sáb. 9/6

12:50 pm-10:40 pm

2 stops12h 50m

$365

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

sáb. 8/16

6:17 am-10:56 pm

2 stops13h 39m

San Juan Luis Munoz Marin Intl

vie. 8/22

7:55 am-9:12 pm

1 stop16h 17m

$401

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

vie. 10/3

10:56 pm-1:45 pm

1 stop11h 49m

San Juan Luis Munoz Marin Intl

mar. 10/7

12:50 pm-9:29 pm

1 stop11h 39m

$410

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mié. 10/15

5:05 am-5:30 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

mar. 10/21

2:00 pm-8:24 pm

1 stop9h 24m

$455

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

vie. 10/31

7:10 am-9:35 pm

1 stop11h 25m

San Juan Luis Munoz Marin Intl

dom. 11/9

6:10 am-5:15 pm

1 stop15h 05m

$461

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

mar. 9/16

10:56 pm-2:13 pm

1 stop12h 17m

Santiago de los Caballeros

vie. 9/26

12:48 pm-9:29 pm

1 stop11h 41m

$495

OntarioSanto Domingo

ONT - SDQ

ONTSDQ

Ontario

mar. 7/22

11:59 pm-8:04 pm

1 stop17h 05m

Santo Domingo Las Americas

jue. 7/31

1:05 pm-9:59 pm

1 stop11h 54m

$495

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

sáb. 9/20

8:15 am-12:27 pm

2 stops25h 12m

Santiago de los Caballeros

sáb. 10/4

1:29 pm-10:05 am

2 stops23h 36m

$499

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

dom. 9/7

10:56 pm-3:25 pm

1 stop13h 29m

Punta Cana

jue. 9/11

11:30 am-9:29 pm

1 stop12h 59m

$505

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

sáb. 11/1

11:59 pm-1:25 pm

2 stops10h 26m

Punta Cana

sáb. 11/8

5:45 pm-9:28 am

2 stops19h 43m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Caribbean

Have a flexible travel schedule? Discover the best time to fly to Caribbean from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Caribbean

What is the cheapest month to book a flight from Ontario to Caribbean?

Currently, September is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $254). Flying from Ontario to Caribbean in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to CB?

Find hourly flight availability from Ontario to Caribbean. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Caribbean as you normally would.

Reviews of airlines servicing Caribbean

Get insights into the airlines that provide service to Caribbean. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Caribbean. Reviews last updated junio 30, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Ontario to Caribbean. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Copa Airlines
7.5
Good
1,464 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,852 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Caribbean. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Caribbean?

    If you book a flight to Caribbean from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • What are the cheapest airlines to fly from Ontario to Caribbean one-way?

    The cheapest airlines for a one-way flight from Ontario to Caribbean are Delta ($183), Frontier ($184), and JetBlue ($194).

  • What are the most popular routes from Ontario to Caribbean?

    The most popular route from Ontario to Caribbean is Ontario - San Juan Luis Munoz Marin Intl. You may also consider Ontario - Punta Cana or Ontario - Montego Bay Sangster Intl.

  • Can I find deals for flights from Ontario to Caribbean that include hotel bookings?

    Yes. In addition to deals on Ontario to Caribbean flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Caribbean?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Caribbean.

  • Can I find deals for business class flights from Ontario to Caribbean?

    Yes. Cheapflights offers flight deals from Ontario to Caribbean by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Caribbean?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $254). Flying from Ontario to Caribbean in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ontario to Caribbean

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ontario to Caribbean

Discover the top 6 airlines that operate flights from Ontario to Caribbean. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$416FlexibilityNo cancel feeOn-time62%
DeltaCheapest$278Average$649FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$353Average$693FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$366Average$610FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$409Average$682FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$425Average$687FlexibilityNo cancel feeOn-time62%

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